bool SkPdfNativeObject::applyFlateDecodeFilter() {
if (!SkFlate::HaveFlate()) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kNoFlateLibrary_SkPdfIssue,
"forgot to link with flate library?", NULL, NULL);
return false;
}
const unsigned char* old = fStr.fBuffer;
bool deleteOld = isStreamOwned();
SkMemoryStream skstream(fStr.fBuffer, fStr.fBytes >> 2, false);
SkDynamicMemoryWStream uncompressedData;
if (SkFlate::Inflate(&skstream, &uncompressedData)) {
fStr.fBytes = (uncompressedData.bytesWritten() << 2) + kOwnedStreamBit +
kUnfilteredStreamBit;
fStr.fBuffer = (const unsigned char*)new unsigned char[uncompressedData.bytesWritten()];
uncompressedData.copyTo((void*)fStr.fBuffer);
if (deleteOld) {
delete[] old;
}
return true;
} else {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kBadStream_SkPdfIssue, "inflate failed", this, NULL);
return false;
}
}
void SkParsePath::ToSVGString(const SkPath& path, SkString* str) {
SkDynamicMemoryWStream stream;
SkPath::Iter iter(path, false);
SkPoint pts[4];
for (;;) {
switch (iter.next(pts, false)) {
case SkPath::kMove_Verb:
append_scalars(&stream, 'M', &pts[0].fX, 2);
break;
case SkPath::kLine_Verb:
append_scalars(&stream, 'L', &pts[1].fX, 2);
break;
case SkPath::kQuad_Verb:
append_scalars(&stream, 'Q', &pts[1].fX, 4);
break;
case SkPath::kCubic_Verb:
append_scalars(&stream, 'C', &pts[1].fX, 6);
break;
case SkPath::kClose_Verb:
stream.write("Z", 1);
break;
case SkPath::kDone_Verb:
str->resize(stream.getOffset());
stream.copyTo(str->writable_str());
return;
}
}
}
static void TestWStream(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream ds;
const char s[] = "abcdefghijklmnopqrstuvwxyz";
int i;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.getOffset() == 100 * 26);
char* dst = new char[100 * 26 + 1];
dst[100*26] = '*';
ds.copyTo(dst);
REPORTER_ASSERT(reporter, dst[100*26] == '*');
// char* p = dst;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, memcmp(&dst[i * 26], s, 26) == 0);
}
{
SkData* data = ds.copyToData();
REPORTER_ASSERT(reporter, 100 * 26 == data->size());
REPORTER_ASSERT(reporter, memcmp(dst, data->data(), data->size()) == 0);
data->unref();
}
delete[] dst;
}
static SkString emit_to_string(T& obj) {
SkDynamicMemoryWStream buffer;
obj.emitObject(&buffer);
SkString tmp(buffer.bytesWritten());
buffer.copyTo(tmp.writable_str());
return tmp;
}
static void TestWStream(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream ds;
const char s[] = "abcdefghijklmnopqrstuvwxyz";
int i;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.bytesWritten() == 100 * 26);
char* dst = new char[100 * 26 + 1];
dst[100*26] = '*';
ds.copyTo(dst);
REPORTER_ASSERT(reporter, dst[100*26] == '*');
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, memcmp(&dst[i * 26], s, 26) == 0);
}
{
std::unique_ptr<SkStreamAsset> stream(ds.detachAsStream());
REPORTER_ASSERT(reporter, 100 * 26 == stream->getLength());
REPORTER_ASSERT(reporter, ds.bytesWritten() == 0);
test_loop_stream(reporter, stream.get(), s, 26, 100);
std::unique_ptr<SkStreamAsset> stream2(stream->duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
std::unique_ptr<SkStreamAsset> stream3(stream->fork());
REPORTER_ASSERT(reporter, stream3->isAtEnd());
char tmp;
size_t bytes = stream->read(&tmp, 1);
REPORTER_ASSERT(reporter, 0 == bytes);
stream3->rewind();
test_loop_stream(reporter, stream3.get(), s, 26, 100);
}
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.bytesWritten() == 100 * 26);
{
// Test that this works after a snapshot.
std::unique_ptr<SkStreamAsset> stream(ds.detachAsStream());
REPORTER_ASSERT(reporter, ds.bytesWritten() == 0);
test_loop_stream(reporter, stream.get(), s, 26, 100);
std::unique_ptr<SkStreamAsset> stream2(stream->duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
}
delete[] dst;
SkString tmpDir = skiatest::GetTmpDir();
if (!tmpDir.isEmpty()) {
test_filestreams(reporter, tmpDir.c_str());
}
}
static SkString emit_to_string(T& obj, Catalog* catPtr = nullptr) {
Catalog catalog;
SkDynamicMemoryWStream buffer;
if (!catPtr) {
catPtr = &catalog;
}
obj.emitObject(&buffer, catPtr->numbers, catPtr->substitutes);
SkString tmp(buffer.bytesWritten());
buffer.copyTo(tmp.writable_str());
return tmp;
}
static void apply_paint_typeface(const SkPaint& paint, Json::Value* target,
bool sendBinaries) {
SkTypeface* typeface = paint.getTypeface();
if (typeface != nullptr) {
if (sendBinaries) {
Json::Value jsonTypeface;
SkDynamicMemoryWStream buffer;
typeface->serialize(&buffer);
void* data = sk_malloc_throw(buffer.bytesWritten());
buffer.copyTo(data);
Json::Value bytes;
encode_data(data, buffer.bytesWritten(), &bytes);
jsonTypeface[SKJSONCANVAS_ATTRIBUTE_BYTES] = bytes;
free(data);
(*target)[SKJSONCANVAS_ATTRIBUTE_TYPEFACE] = jsonTypeface;
}
}
}
void SkParsePath::ToSVGString(const SkPath& path, SkString* str) {
SkDynamicMemoryWStream stream;
SkPath::Iter iter(path, false);
SkPoint pts[4];
for (;;) {
switch (iter.next(pts, false)) {
case SkPath::kConic_Verb: {
const SkScalar tol = SK_Scalar1 / 1024; // how close to a quad
SkAutoConicToQuads quadder;
const SkPoint* quadPts = quadder.computeQuads(pts, iter.conicWeight(), tol);
for (int i = 0; i < quadder.countQuads(); ++i) {
append_scalars(&stream, 'Q', &quadPts[i*2 + 1].fX, 4);
}
} break;
case SkPath::kMove_Verb:
append_scalars(&stream, 'M', &pts[0].fX, 2);
break;
case SkPath::kLine_Verb:
append_scalars(&stream, 'L', &pts[1].fX, 2);
break;
case SkPath::kQuad_Verb:
append_scalars(&stream, 'Q', &pts[1].fX, 4);
break;
case SkPath::kCubic_Verb:
append_scalars(&stream, 'C', &pts[1].fX, 6);
break;
case SkPath::kClose_Verb:
stream.write("Z", 1);
break;
case SkPath::kDone_Verb:
str->resize(stream.getOffset());
stream.copyTo(str->writable_str());
return;
}
}
}
static void testPngComments(const SkPixmap& src, SkPngEncoder::Options& options,
skiatest::Reporter* r) {
std::vector<std::string> commentStrings;
pushComment(commentStrings, "key", "text");
pushComment(commentStrings, "test", "something");
pushComment(commentStrings, "have some", "spaces in both");
std::string longKey(PNG_KEYWORD_MAX_LENGTH, 'x');
#ifdef SK_DEBUG
commentStrings.push_back(longKey);
#else
// We call SkDEBUGFAILF it the key is too long so we'll only test this in release mode.
commentStrings.push_back(longKey + "x");
#endif
commentStrings.push_back("");
std::vector<const char*> commentPointers;
std::vector<size_t> commentSizes;
for(auto& str : commentStrings) {
commentPointers.push_back(str.c_str());
commentSizes.push_back(str.length() + 1);
}
options.fComments = SkDataTable::MakeCopyArrays((void const *const *)commentPointers.data(),
commentSizes.data(), commentStrings.size());
SkDynamicMemoryWStream dst;
bool success = SkPngEncoder::Encode(&dst, src, options);
REPORTER_ASSERT(r, success);
std::vector<char> output(dst.bytesWritten());
dst.copyTo(output.data());
// Each chunk is of the form length (4 bytes), chunk type (tEXt), data,
// checksum (4 bytes). Make sure we find all of them in the encoded
// results.
const char kExpected1[] =
"\x00\x00\x00\x08tEXtkey\x00text\x9e\xe7\x66\x51";
const char kExpected2[] =
"\x00\x00\x00\x0etEXttest\x00something\x29\xba\xef\xac";
const char kExpected3[] =
"\x00\x00\x00\x18tEXthave some\x00spaces in both\x8d\x69\x34\x2d";
std::string longKeyRecord = "tEXt" + longKey; // A snippet of our long key comment
std::string tooLongRecord = "tExt" + longKey + "x"; // A snippet whose key is too long
auto search1 = std::search(output.begin(), output.end(),
kExpected1, kExpected1 + sizeof(kExpected1));
auto search2 = std::search(output.begin(), output.end(),
kExpected2, kExpected2 + sizeof(kExpected2));
auto search3 = std::search(output.begin(), output.end(),
kExpected3, kExpected3 + sizeof(kExpected3));
auto search4 = std::search(output.begin(), output.end(),
longKeyRecord.begin(), longKeyRecord.end());
auto search5 = std::search(output.begin(), output.end(),
tooLongRecord.begin(), tooLongRecord.end());
REPORTER_ASSERT(r, search1 != output.end());
REPORTER_ASSERT(r, search2 != output.end());
REPORTER_ASSERT(r, search3 != output.end());
REPORTER_ASSERT(r, search4 != output.end());
REPORTER_ASSERT(r, search5 == output.end());
// Comments test ends
}
extern "C" void JpegStub_getCompressedImage(JpegStub* stub, void* buff) {
SkDynamicMemoryWStream* stream =
(SkDynamicMemoryWStream*)stub->mInternalStream;
stream->copyTo(buff);
}
